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Finding the Fourth Proportional to 208,366.10, 312,428.43 and 183,456.20

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Solution

The fourth proportional to 208,366.10, 312,428.43 and 183,456.20 is: 275,078.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,366.10 : 312,428.43 = 183,456.20 : x
  2. Step 2: Convert to fraction form
    208,366.10/312,428.43 = 183,456.20/x
  3. Step 3: Cross multiply
    208,366.10x = 312,428.43 × 183,456.20
  4. Step 4: Simplify right side
    208,366.10x = 57,316,932,539.77
  5. Step 5: Solve for x
    x = 57,316,932,539.77/208,366.10
  6. Step 6: Final answer
    x = 275,078.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.